What kind of mileage do you get?

[satxwy]

Yeah that stretch of highway is between I-35 and I-10 to bypass Austin. And lots of I-10 and I-20 are at 80.

Ideal speed depends on the vehicle, with these trucks probably 55 is a better bet. One time I got 23 mpg with the 4x4 Tahoe doing 45 most of the tank.

 

[great white]

459 kms and just coming off 3/4 tank.....that would be about 285 miles.

Getting better the more I tweak the cal.....

 

[twomanymontes]

Fuel mileage dropped severly! 9 MPG! Then I realized the return line was leaking, repaired that after work today. Hopefully the next tank will be better

 

[tailpipe51]

i get about 12 in my burban and my speedo reads fast

 

[94Sierra4x4]

17.5 MPG on mountainous highway trip. Cruise set at 110, foot right into er coming up each side of the "Hump"

 

[glfirefighter144]

just got 17.1 in the dually, 55 and under, towed a tractor 30 miles or so, and live on a mountain

 

[94Sierra4x4]

Managed to get 18.1 mpg on a similar trip and floored it up the "Hump" again..also hit the big hill slow due to a loaded excavator on a low bed.

Cruise set between 90-110 km/h depending on the stretch of highway. Never cruised above 2k rpm.

 

[Vortec Lover]

17.2 today... which is better than I was hoping for on the interstate

 

[southern_z71_92]

i have a 355 with a built 700r4 and a 650 edelbrock carb with a high rise intake and double hump heads and i get what im guessing is 4 to 8 mpg. i also also have 36s with stock 3.73 gears. it sucks.

 

[95C1500]

12.6